How do I style elements in Dart Web UI templates? -


say have custom component with

<head>   <link rel="stylesheet" src="..."> </head>  <body>   <element name="elem">     <template>       <ul class="foo"> ...

where referenced style sheet has entry

ul .foo {   list-style-type: none; }

the problem can't style apply ul. nothing tried works unless put style attribute on ul element itself. have tried putting under scoped attribute , doesn't work either. weird thing class of ul becomes "elem_foo".

thanks question! here's how it:

in main html:

<div is="x-click-counter">

in custom element:

<element name="x-click-counter" constructor="countercomponent" extends="div">   <template>     <button class="button1" on-click="increment()">click me</button><br />     <span>(click count: {{count}})</span>     <style scoped>       div[is=x-click-counter] span {         color: red;       }     </style>   </template>   <script type="application/dart" src="xclickcounter.dart"></script> </element>

there 2 things going on here.

1) use form of <div is="x-foo"> instead of <x-foo>. how first form more backwards compatible, , it's more explicit how find element.

2) put <style scoped> inside <template> tag.

web ui see scope style tag, , generate css file you. looks this:

/* auto-generated components style tags. */ /* not edit. */  /* ====================================================     component x-click-counter stylesheet     ==================================================== */ div[is=x-click-counter] span {   color: #f00; }

web ui adds link generated css file main html file.


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